Wesley



W. L. SMITH.

SHADE GUIDE. APPLICATION FILED JULY I8. 1918.

Patented J 11116 24:, 1919,

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WESLEY I L. SMITH; or PITT I Yeasts-seas,

1 Specification of Letters Patent.

Patented June 24,

To all whom it may concern;

Be it known that I, WESLEY LQS ITH, a

citizen of the United States, and a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have made a new and useful Invention in Shade-Guides, of which the followingis aspecification.

This invention relates to means for dis playing under water a variety of shades of tooth repair material. u

It is now customary to repair teeth with a cementitious material, and, since I the shades of teeth vary it is necessary to prepare such material in a varietyof shades so that a perfect match may be obtained. It has been found, since the shades of tooth repair materials are different when dry from what they are when wet, that it is necessary to match the shades while the samples of materials are in a wet condition.

It has heretofore been proposed, (as set forth in United States Letters Patent No. 1,246,999 issued November 20, 19-17) to display under glass and immersed in water a number of samples of repair material of varying shades. The device of said application, however, has in practice proved objectionable for a number of reasons.

An object of this invention is to provide a device or means for displaying under water a number of samples of the tooth repair material in varying shades,each sealed in its individual container in order to prevent evaporation of the immersingwater or loss of use of the entire device upon the breaking of one of the containers as would occur in the device of said patent. I

This, as well as other objects which will readily appear to those skilled in this particular art, I attain in the device illustrated in the drawings accompanying and forming a part of this application.

In the drawings Figure 1 is a top plan view of a device embodying this invention. Fig. 2 is a view partially in section and partially in plan ofsaid device, Fig. 3 isa view partially in cross section and partially in elevation of said device and Figs. 4c, 5 and 6 represent details of the structure used in the device and the process of making portions of the same.

The device preferably consists of a housing made up of a top 7 provided with a central handle or knob 8, an annular side wall 9 and a back plate 10 cemented within the outer edge of the side wall. The housing and back plate preferably formed of i celluloid or somesimilar substance and an nular wall 9 is provided with circular. openings through which glass containers are illustrated.

The containers, as before stated, are pref era'bly made of glass in the form of tubes having one end closed and the opposite end flanged as shown atylflanchbetween these flanges andthe inner surface of wall 9 flexible washers l3 are placed it so; as e to I sure round the tubular containers. A strip pad 14 of some soft material such as felt lies against the flanged ends of the containers and aspring member 15 in contact Withpad 1;]; retains the containers in place. ,Each

container is provided with a cylinderlfi of the tooth repair material and an-amount of water 17 for maintaining the sample in a Wet condition, The water-and sample are sealed within the container by means of a paraffin plug 18 which is preferably colored black for appearance sake and is flowed I while in a liquid condition into the containers on top of the water contained therein. In order to be sure that the paraflin plug will remain in position under extremely high temperatures an end seal 19 preferably formed of shellac or a similar material is provided.

In order to form the samples of the proper shape to conform to the containers I haNG found that a convenient method is to pack the repair material while in a plastic state into gelatin capsules 20 and after the repair material has hardened to dissolve off the capsules in water thus leaving a cylinder having one round end adapted to conform to the outer rounded ends of the containers. Of course, various other Ways may be utilized in forming the samples of material for display purposes but the manner illustrated has proven effective and is found to be commercially practical. I

As it is necessary to give to each shade some designation 'I have found it convenient to number the different shades for the pur- In accordance with the provisions of the patent statutes I have described the princi ple of my invention, together with the device which I now consider to represent the best embodiment thereof, but I desire to a have" it understood that the device shown body member, a sample of repair material in each receptacle, and transparent liquid in each receptacle surrounding said material/ 2. In a device for displaying a number of shade of tooth repair material, a body member, a number of'glass containers carried by said body member, a sample of solidified tooth repair material in each container, transparent liquid in each container surrounding the sample, and means for sealing inthe liquid ineach container.

3; The combination of a body having an annular flange, tubular glass containers eX- tending through said flange, a sample of solidified repair material in each container,

transparent liquid in each container surrounding said sample, means for sealing each container, means-forremovably hold- (lopies of this patent may be obtained for five radiate from said body, of solldlfied repair tamer, transparent l1qu1d in each container ing'said containers in place and aback for said body.

a 4. The combination of a hollow circular body, tubular glass containers arranged to a cylindrical sample material in each consurrounding he sample, and means for sealing each container.

5. The combination With a flat hollow circular body member, tubular glass containers arranged to radially extend through the circular Wall of said body member, a sample of repair material, in each container, transparent liquid in each container, means for sealing each container and means for removably holding the containers in place.

6. In a device for displaying a number of shades of tooth repair material, a number of glass containers, a sample of repair material in; each container, transparent liquid in each container, means for sealing each container and means for supporting said containers.

In testimony whereof, I have hereunto subscribed my name this 12th day of July, 1 1

' WESLEY L. SMITH.

cents each, by addressing the Commissioner of Patents.

Washington, D. G. 

